Alberto Sartori albertored

These snippets provide a foundation for starting and stopping supervision trees at runtime using feature flags (e.g. Launch Darkly).

Some things to note when adapting these snippets:

application.ex needs to be adapted into an existing application. The important part is that each child spec provided is compliant, and that there is a feature flag (ld_key) specified.
As written, if a feature flag fails for some reason, it defaults to starting all children. There is room for adaptation here as needed.
This implementation will still require a FeatureFlags module to be available that implements is_on?/2. Adjust as needed to accomodate your own feature flag setup.

Carbon / Graphite tip: How to use whisper-resize to change xFilesFactor on existing stats

Detailed Steps

1.) Update /etc/carbon/storage-aggregation.conf to use the new xFilesFactor setting for new stats, if you haven't yet already

2.) Get the retention ranges as defined in storage-schemas.conf

fgrep retentions /etc/carbon/storage-schemas.conf | tr ',' ' '

Share Counts

I have always struggled with getting all the various share buttons from Facebook, Twitter, Google Plus, Pinterest, etc to align correctly and to not look like a tacky explosion of buttons. Seeing a number of sites rolling their own share buttons with counts, for example The Next Web I decided to look into the various APIs on how to simply return the share count.

If you want to roll up all of these into a single jQuery plugin check out Sharrre

Many of these API calls and methods are undocumented, so anticipate that they will change in the future. Also, if you are planning on rolling these out across a site I would recommend creating a simple endpoint that periodically caches results from all of the APIs so that you are not overloading the services will requests.

Twitter

	#!/bin/bash

	# Installation:
	#
	# 1. vim /etc/ssh/sshd_config
	# PrintMotd no
	#
	# 2. vim /etc/pam.d/login
	# # session optional pam_motd.so
	#

	-module(gproc_tests).
	-compile(export_all).
	-include_lib("stdlib/include/qlc.hrl").

	go() -> make:all([load]).

	register_stuff() ->
	gproc:reg({n, l, key1}, value1),
	gproc:reg({n, l, key2}, value2),
	gproc:reg({n, l, key3}, value3),